<template>
  <div>
    <h4>这个是子组件 {{ aaa }}</h4>

  </div>
</template>

<script>
export default {
  props: {
    aaa: {
      type: Number,
      required: true
    }
  },
  methods: {
    demo() {
      console.log('ok')
    }
  }
}
</script>

<style>

</style>
